What’s Vulnerable › Vulnerabilities

CVE-2026-28459: OpenClaw < 2026.2.12 - Arbitrary File Write via Untrusted sessionFile Path

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-05 · updated 2026-06-17
• Weakness: CWE-73

Description

OpenClaw versions prior to 2026.2.12 fail to validate the sessionFile path parameter, allowing authenticated gateway clients to write transcript data to arbitrary locations on the host filesystem. Attackers can supply a sessionFile path outside the sessions directory to create files and append data repeatedly, potentially causing configuration corruption or denial of service.

Affected products

• OpenClaw: before 2026.2.12 — fixed in 2026.2.12

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.12. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/25950bcbb8ba4d8cde002557f6e27c219ae4deda
• https://github.com/openclaw/openclaw/commit/4199f9889f0c307b77096a229b9e085b8d856c26
• https://github.com/openclaw/openclaw/security/advisories/GHSA-64qx-vpxx-mvqf
• https://www.vulncheck.com/advisories/openclaw-arbitrary-file-write-via-untrusted-sessionfile-path

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